# Copyright (c) 2025, NVIDIA CORPORATION.  All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import re

from nemo_curator.stages.text.modifiers.doc_modifier import DocumentModifier

URL_REGEX = re.compile(r"https?://\S+|www\.\S+", flags=re.IGNORECASE)


class UrlRemover(DocumentModifier):
    """
    Removes all URLs in a document.
    """

    def __init__(self):
        super().__init__()

    def modify_document(self, text: str) -> str:
        return URL_REGEX.sub("", text)
